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SQL Tutorial

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SQL KeywordsMySQL Functions
String Functions:ASCIICHAR_LENGTHCHARACTER_LENGTHCONCATCONCAT_WSFIELDFIND_IN_SETFORMATINSERTINSTRLCASELEFTLENGTHLOCATELOWERLPADLTRIMMIDPOSITIONREPEATREPLACEREVERSERIGHTRPADRTRIMSPACESTRCMPSUBSTRSUBSTRINGSUBSTRING_INDEXTRIMUCASEUPPERNumeric Functions:ABSACOSASINATANATAN2AVGCEILCEILINGCOSCOTCOUNTDEGREESDIVEXPFLOORGREATESTLEASTLNLOGLOG10LOG2MAXMINMODPIPOWPOWERRADIANSRANDROUNDSIGNSINSQRTSUMTANTRUNCATEDate Functions:ADDDATEADDTIMECURDATECURRENT_DATECURRENT_TIMECURRENT_TIMESTAMPCURTIMEDATEDATEDIFFDATE_ADDDATE_FORMATDATE_SUBDAYDAYNAMEDAYOFMONTHDAYOFWEEKDAYOFYEAREXTRACTFROM_DAYSHOURLAST_DAYLOCALTIMELOCALTIMESTAMPMAKEDATEMAKETIMEMICROSECONDMINUTEMONTHMONTHNAMENOWPERIOD_ADDPERIOD_DIFFQUARTERSECONDSEC_TO_TIMESTR_TO_DATESUBDATESUBTIMESYSDATETIMETIME_FORMATTIME_TO_SECTIMEDIFFTIMESTAMPTO_DAYSWEEKWEEKDAYWEEKOFYEARYEARYEARWEEKAdvanced Functions:BINBINARYCASECASTCOALESCECONNECTION_IDCONVCONVERTCURRENT_USERDATABASEIFIFNULLISNULLLAST_INSERT_IDNULLIFSESSION_USERSYSTEM_USERUSERVERSION
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SQLLIKE Keyword

LIKE

TheLIKE command is used in a WHERE clause to search for a specified pattern in a column.

You can use two wildcards withLIKE:

  • % - Represents zero, one, or multiple characters
  • _ - Represents a single character (MS Access uses a question mark (?) instead)

The following SQL selects all customers with a CustomerName starting with "a":

Example

SELECT * FROM Customers
WHERE CustomerName LIKE 'a%';
Try it Yourself »

The following SQL selects all customers with a CustomerName ending with "a":

Example

SELECT * FROM Customers
WHERE CustomerName LIKE '%a';
Try it Yourself »

The following SQL selects all customers with a CustomerName that have "or" in any position:

Example

SELECT * FROM Customers
WHERE CustomerName LIKE '%or%';
Try it Yourself »

The following SQL statement selects all customers with a CustomerName that starts with "a" and are at least 3 characters in length:

Example

SELECT * FROM Customers
WHERE CustomerName LIKE 'a__%';
Try it Yourself »

 
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